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1.
Loginov, V. M.
Brownian particle movement in statistical uniform-fields with finite-
time
of some correlation decrease / V. M. Loginov, V. E. Shapiro> // Zhurnal Tek. Fiz. - 1981. -
Vol. 51
,
Is. 1
. - P. 40-45. - Cited References: 13 . - ISSN 0044-4642
РУБ
Physics, Applied
WOS
Доп.точки доступа:
Shapiro, V. E.; Шапиро, Владлен Ерахмилевич
}
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2.
Correlation of periodic
variations of continental plate displacement relative velocities, sedimentation-rate, and oil deposit formation
time
/ V. P. Aparin> // Doklady Akademii Nauk. - 1983. -
Vol. 270
,
Is. 1
. - P. 161-164. - Cited References: 14 . - ISSN 0002-3264
WOS
Держатели документа:
L.V. Kirensky Inst. Phys., Siberian Branch, USSR Acad. Sci., Krasnoyarsk, Russia
Доп.точки доступа:
Aparin, V. P.; Апарин, Вадим Петрович
}
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3.
Dislocations and
time
-dependent
dynamics of the incommensurate phase of NH4HSEO4 / I. P. Aleksandrova [et al.]> // Ferroelectr. Lett. Sect. - 1984. -
Vol. 1
,
Is. 5-6
. - P. 131-134,
DOI
10.1080/07315178408202410. - Cited References: 5 . - ISSN 0731-5171
РУБ
Physics, Condensed Matter
WOS
Доп.точки доступа:
Aleksandrova, I. P.; Александрова, Инга Петровна; Moskvich, Yu. N.; Москвич, Юрий Николаевич; Rozanov, O. V.; Sukhovsky, A. A.; Суховский, Андрей Андреевич
}
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4.
Berman, G. P.
Stochasticity in a many-particle system with finite-
time
of interaction / G. P. Berman, A. M. KAGANSKY> // Phys. Lett. A. - 1985. -
Vol. 107
,
Is. 3
. - P. 115-119,
DOI
10.1016/0375-9601(85)90727-3. - Cited References: 10 . - ISSN 0375-9601
РУБ
Physics, Multidisciplinary
WOS
,
Scopus
Держатели документа:
L. V. Kirensky Institute of Physics, USSR Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
ИФ СО РАН
Доп.точки доступа:
KAGANSKY, A. M.; Берман, Геннадий Петрович
}
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5.
BULGAKOV, E. N.
MESOSCOPIC RING UNDER THE INFLUENCE OF
TIME
-PERIODICAL FLUX - AHARONOV-BOHM OSCILLATIONS AND TRANSMISSION OF WAVE-PACKETS / E. N. BULGAKOV, A. F. SADREEV> // Phys. Rev. B. - 1995. -
Vol. 52
,
Is. 16
. - P. 11938-11944,
DOI
10.1103/PhysRevB.52.11938. - Cited References: 25 . - ISSN 1098-0121
РУБ
Physics, Condensed Matter
Рубрики:
QUANTUM OSCILLATIONS
NETWORKS
TRANSPORT
Аннотация:
The Aharonov-Bohm oscillations in the transmission probability of a one-dimensional mesoscopic ring between two electrodes are considered numerically where a
time
-periodical flux gamma(t)=gamma+lambda cos omega t is applied. Such a flux simulates a phase-coherent inelastic scattering due to the absorption/emission processes of modulation quanta. An increase of alternating flux amplitude lambda drastically changes the Aharonov-Bohm oscillations of the transmission though the exact period remains phi(0)=hc/e. A frequency dependence of the transmission has abrupt steps at omega=(E-E(F))/n, caused by the locking of the transmission in the nth channel where EF is the Fermi level. Moreover, for transmission of a narrow wave packet the
time
-periodical flux gives rise to two effects. The first is a fractioning of the input wave packet by the ring in such a way that the output wave function consists of a few separate wave packets. Their number, distance apart, and height essentially depend on the static flux gamma. The second effect is a strong space squeezing of the output wave packet.
WOS
,
Scopus
Держатели документа:
L. V. Kirensky Institute of Physics, Krasnoyarsk 660036, Russian Federation
Доп.точки доступа:
SADREEV, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич
}
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6.
Bulgakov, E. N.
Current-voltage characteristics of the resonant tunnelling double-barrier structure under
time
-periodical perturbation / E. N. Bulgakov, A. F. Sadreev> // J. Phys.: Condens. Matter. - 1996. -
Vol. 8
,
Is. 45
. - P. 8869-8887,
DOI
10.1088/0953-8984/8/45/020. - Cited References: 38 . - ISSN 0953-8984
РУБ
Physics, Condensed Matter
Рубрики:
SEMICONDUCTOR DOUBLE-BARRIER
OSCILLATING QUANTUM-WELL
DEPENDENT TRANSPORT
INFRARED-RADIATION
TUNNELING TIMES
HETEROSTRUCTURES
TRANSMISSION
MODEL
FREQUENCIES
COHERENT
Аннотация:
We consider a typical semiconductor resonant tunnelling GaAs/AlGaAs/GaAs nanostructure which forms a double-barrier potential with quasienergy levels corresponding to transition frequencies in the infrared and microwave regions. Two types of dynamical perturbation of the heterostructure in the form V-1(x, t) = V(1)x cos Omega t and V-2(t) = V-2 cos Omega t are considered. We analyse numerically a reconstruction of the electron transmission through the heterostructure and the current-voltage characteristics (IVC) under the influence of these dynamical perturbations. Both weak and strong perturbations are considered. We investigate the dependences of the transmission on the electron energy and the frequency of the external field with the main accent on the case where a frequency of the perturbation is tuned to a transition between quasienergies of the double-barrier structure. it is found that these resonant phenomena give rise to new peaks and dips in the IVC. In particular, it is shown that the dipole type of perturbation V-1(x, t) gives rise to a Rabi splitting of the transmission peaks and under certain conditions to a Rabi splining of the IVC peaks and dips. We demonstrate that dynamical perturbation may induce a direct current opposite to the direction of the applied voltage, and that this phenomenon takes the form of a sharp dip which has a resonant origin. It is observed that the dipole type of perturbation V-1(x, t) of laser radiation is more effective for tuning the IVC than the first perturbation V-2(t). Also absorption and emission of energy by an electron transmitted through the DBRTS are considered.
WOS
,
Scopus
Держатели документа:
Kirensky Institute of Physics, 660036, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич
}
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7.
Dissipative chaos in
semiconductor superlattices / K. N. Alekseev [et al.]> // Phys. Rev. B. - 1996. -
Vol. 54
,
Is. 15
. - P. 10625-10636,
DOI
10.1103/PhysRevB.54.10625. - Cited References: 89 . - ISSN 0163-1829
РУБ
Physics, Condensed Matter
Рубрики:
NEGATIVE DIFFERENTIAL CONDUCTIVITY
INJECTED SIGNAL
BLOCH OSCILLATIONS
COLLECTIVE EXCITATIONS
DETERMINISTIC CHAOS
MINIBAND TRANSPORT
SURFACE-PLASMONS
TIME
-SERIES
LASER
VELOCITY
Аннотация:
We consider the motion of ballistic electrons in a miniband of a semiconductor superlattice (SSL) under the influence of an external,
time
-periodic electric field. We use a semiclassical, balance-equation approach, which incorporates elastic and inelastic scattering (as dissipation) and the self-consistent field generated by the electron motion. The coupling of electrons in the miniband to the self-consistent held produces a cooperative nonlinear oscillatory mode which, when interacting with the oscillatory external field and the intrinsic Bloch-type oscillatory mode, can lead to complicated dynamics, including dissipative chaos. For a range of values of the dissipation parameters we determine the regions in the amplitude-frequency plane of the external field in which chaos can occur. Our results suggest that for terahertz external fields of the amplitudes achieved by present-day free-electron lasers, chaos may be observable in SSL's. We clarify the nature of this interesting nonlinear dynamics in the superlattice-external-field system by exploring analogies to the Dicke model of an ensemble of two-level atoms coupled with a resonant cavity field, and to Josephson junctions.
WOS
Держатели документа:
LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545
LV KIRENSKII INST PHYS,KRASNOYARSK 660036,RUSSIA
UNIV ILLINOIS,DEPT PHYS,URBANA,IL 61801
ИФ СО РАН
Доп.точки доступа:
Alekseev, K. N.; Berman, G. P.; Campbell, D. K.; Cannon, E. H.; Cargo, M. C.
}
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8.
Resonant tunneling in
time
-periodically modulated semiconductor nanostructures / G. P. Berman [et al.]> // Physica B. - 1996. -
Vol. 225
,
Is. 1-2
. - P. 1-22,
DOI
10.1016/0921-4526(96)00233-5. - Cited References: 39 . - ISSN 0921-4526
РУБ
Physics, Condensed Matter
Рубрики:
DOUBLE BARRIERS
TRANSMISSION
HETEROSTRUCTURES
Аннотация:
We consider a semiconductor (AlGaAs/GaAs/AlGaAs) double-barrier resonant tunneling nanostructure (DBRTS), in which the bottom of the potential well is modulated by an external periodic potential V(t) = V-mod cos Omega t. We examine the resonance response to both mono-energetic and spatially localized incident electrons, extending previous results in three ways. First, we study numerically the resonant characteristics in the transmission probabilities as functions of both the electron's energy and the frequency of the external field. We find that new low-frequency resonant peaks appear in the frequency dependence of the transmission probabilities and discuss the origin and possible experimental observation of these peaks. Second, we develop an analytic perturbation theory (valid for small values of the parameter lambda = V-mod/h Omega) describing the processes of absorption and emission of single quanta of the modulation field and show that this perturbative treatment agrees well with the results of numerical calculations in the appropriate regions, up to and including the regime in which the one-quantum processes saturate. Third, for localized (Gaussian) incident wave packets, we show numerically that temporal modulations of the potential well in the DBRTS can induce spatial modulations in the transmitted and reflected wave packets. We develop a simple qualitative picture that explains our results. Finally, we estimate characteristic values of the parameters relevant for possible observation of these effects in laboratory experiments.
WOS
Держатели документа:
LOS ALAMOS NATL LAB,CNLS,LOS ALAMOS,NM 87545
LV KIRENSKII INST PHYS,DEPT PHYS,KRASNOYARSK 660036,RUSSIA
UNIV ILLINOIS,DEPT PHYS,URBANA,IL 61801
ИФ СО РАН
Доп.точки доступа:
Berman, G. P.; Берман, Геннадий Петрович; Bulgakov, E. N.; Булгаков, Евгений Николаевич; Campbell, D. K.; Sadreev, A. F.; Садреев, Алмаз Фаттахович
}
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9.
Zobov, V. E.
On the radius of convergence of series in powers of
time
for spin correlation functions of the Heisenberg magnet at high temperature / V. E. Zobov, M. A. Popov> // Theor. Math. Phys. - 1997. -
Vol. 112
,
Is. 3
. - P. 1182-1191,
DOI
10.1007/BF02583049. - Cited References: 22 . - ISSN 0040-5779
РУБ
Physics, Multidisciplinary + Physics, Mathematical
Рубрики:
AUTO-CORRELATION FUNCTION
INFINITE-TEMPERATURE
PARAMAGNET
DYNAMICS
MODEL
Аннотация:
The convergence of series in powers of
time
for spin autocorrelation functions of the Heisenberg magnet are investigated at infinite temperatures on lattices of different dimensions d. The calculation data available at the present
time
for the coefficients of these series are used to estimate the corresponding radii of convergence, whose growth with decreasing d is revealed and explained in a self-consistent approximation. To this end, a simplified nonlinear equation corresponding to this approximation is suggested and solved for the autocorrelation function of a system with an arbitrary number Z of nearest neighbors. The coefficients of the expansion in powers of
time
for the solution are represented in the form of trees on the Bethe lattice with the coordination number Z. A computer simulation method is applied to calculate the expansion coefficients for trees embedded in square, triangular, and simple cubic lattices under the condition that the intersection of tree branches is forbidden. It is found that the excluded volume effect that manifests itself in a decrease in these coefficients and in an increase in the coordinate and exponent of the singularity of the autocorrelation function on the imaginary
time
axis is intensified with decreasing lattice dimensions.
WOS
,
Scopus
Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk, Russia
Krasnoyarsk State Univ, Krasnoyarsk, Russia
ИФ СО РАН
Доп.точки доступа:
Popov, M. A.; Зобов, Владимир Евгеньевич
}
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10.
Quantum nonlinear resonance
and quantum chaos in Aharonov-Bohm oscillations in mesoscopic semiconductor rings / G. P. Berman [et al.]> // Phys. Rev. B. - 1997. -
Vol. 56
,
Is. 16
. - P. 10338-10354,
DOI
10.1103/PhysRevB.56.10338. - Cited References: 51 . - ISSN 0163-1829
РУБ
Physics, Condensed Matter
Рубрики:
EXCITED HYDROGEN-ATOMS
FREQUENCY ELECTROMAGNETIC-FIELD
PERSISTENT CURRENTS
NORMAL-METAL
ENERGY SPACE
LOCALIZATION
TRANSPORT
LOOP
TIME
TRANSMISSION
Аннотация:
We consider Aharonov-Bohm oscillations in a mesoscopic semiconductor ring threaded by both a constant magnetic flux and a
time
-dependent, resonant magnetic field with one or two frequencies. Working in the ballistic regime, we establish that the theory of ''quantum nonlinear resonance'' applies, and thus that this system represents a possible solid-state realization of ''quantum nonlinear resonance'' and ''quantum chaos.'' In particular, we investigate the behavior of the
time
-averaged electron energy at zero temperature in the regimes of (i) an isolated quantum nonlinear resonance and (ii) the transition to quantum chaos, when two quantum nonlinear resonances overlap. The
time
-averaged energy exhibits sharp resonant behavior as a function of the applied constant magnetic flux, and has a staircase dependence on the amplitude of the external
time
-dependent field. In the chaotic regime, the resonant behavior exhibits complex structure as a function of flux and frequency. We compare and contrast the quantum chaos expected in these mesoscopic ''solid-state atoms'' with that observed in Rydberg atoms in microwave fields, and discuss the prospects for experimental observation of the effects we predict.
WOS
Держатели документа:
LOS ALAMOS NATL LAB,CTR NONLINEAR STUDIES,LOS ALAMOS,NM 87545
LV KIRENSKII INST PHYS,KRASNOYARSK 660036,RUSSIA
UNIV ILLINOIS,DEPT PHYS,URBANA,IL 61801
UKRAINIAN ACAD SCI,INST LOW TEMP PHYS & ENGN,UA-310164 KHARKOV,UKRAINE
ИФ СО РАН
Доп.точки доступа:
Berman, G. P.; Bulgakov, E. N.; Булгаков, Евгений Николаевич; Campbell, D. K.; Krive, I. V.
}
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11.
Spontaneous dc current
generation in a resistively shunted semiconductor superlattice driven by a terahertz field / K. N. Alekseev [et al.]> // Phys. Rev. Lett. - 1998. -
Vol. 80
,
Is. 12
. - P. 2669-2672,
DOI
10.1103/PhysRevLett.80.2669. - Cited References: 21 . - ISSN 0031-9007
РУБ
Physics, Multidisciplinary
Рубрики:
DYNAMIC LOCALIZATION
BLOCH OSCILLATIONS
ELECTRIC-FIELD
THZ-FIELD
PENDULUM
CHAOS
TIME
SUPPRESSION
SYSTEMS
Аннотация:
We study a resistively shunted semiconductor superlattice subject to a high-frequency electric field. Using a balance equation approach that incorporates the influence of the electric circuit, we determine numerically a range of amplitude and frequency of the ac field for which a de bias and current are generated spontaneously and show that this region is likely accessible to current experiments. Our simulations reveal that the Bloch frequency corresponding to the spontaneous de bias is approximately an integer multiple of the ac field frequency.
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Держатели документа:
Univ Illinois, Dept Phys, Urbana, IL 61801 USA
NORDITA, DK-2100 Copenhagen O, Denmark
LV Kirensky Phys Inst, Theory Nonlinear Proc Lab, Krasnoyarsk 660036, Russia
Loughborough Univ Technol, Dept Phys, Loughborough LE11 3TU, Leics, England
ИФ СО РАН
Доп.точки доступа:
Alekseev, K. N.; Cannon, E. H.; McKinney, J. C.; Kusmartsev, F. V.; Campbell, D. K.
}
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12.
Bulgakov, E. N.
Mixing of bound states with electron transport by a radiation field in waveguides / E. N. Bulgakov, A. F. Sadreev> // J. Exp. Theor. Phys. - 1998. -
Vol. 87
,
Is. 6
. - P. 1058-1067,
DOI
10.1134/1.558621. - Cited References: 27 . - ISSN 1063-7761
РУБ
Physics, Multidisciplinary
Рубрики:
CLASSICALLY UNBOUND SYSTEM
HALL RESISTANCE ANOMALIES
QUANTUM WAVE-GUIDES
POINT CONTACTS
WIRES
TIME
CONDUCTANCE
Аннотация:
Electron transmission in the two-, three-, and four-terminal nanostructures is considered under the influence of a radiation field. The frequency of the radiation field is tuned to the transition between the energy of a bound state and the Fermi energy of the incident electrons. The radiation induced resonant peaks and dips of the electron transport are exhibited for zero and low magnetic fields. It is shown that rotation of the radiation field polarization can effectively control the electron transport into different electrodes attached to the structures because of the symmetry of the structures. The resonant anomalies of the Hall resistance are found in a weak magnetic field. (C) 1998 American Institute of Physics. [S1063-7761(98)00412-0].
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,
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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Abo Akad Univ, Inst Fys, Dept Phys, SF-20500 Abo, Finland
ИФ СО РАН
Доп.точки доступа:
Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич
}
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13.
Alekseev, K. N.
Strange attractor in resonant tunneling / K. N. Alekseev, G. P. Berman, D. K. Campbell> // Phys. Rev. B. - 1998. -
Vol. 58
,
Is. 7
. - P. 3954-3962,
DOI
10.1103/PhysRevB.58.3954. - Cited References: 38 . - ISSN 0163-1829
РУБ
Physics, Condensed Matter
Рубрики:
INTRINSIC BISTABILITY
RING CAVITY
OPTICAL TURBULENCE
TRANSMITTED LIGHT
QUANTUM-WELLS
OSCILLATIONS
BARRIERS
SYSTEM
STATE
TIME
Аннотация:
We consider the process of resonant electron tunneling through a double-barrier potential, taking into account nonlinear dynamical effects generated by charge accumulation in the interbarrier space. We use the perturbation approach of Davydov and Ermakov, which was developed for investigating intrinsic bistability in resonant tunneling. For incoming electron flow, which is modulated slowly in
time
, we show that the resulting nonlinear dynamics can become chaotic, with the chaos described (because of the open nature of the system) by a strange attractor. We determine the conditions for the existence of this strange attractor and estimate characteristic experimental parameters for its observation.
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Держатели документа:
LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA
Univ Calif Los Alamos Natl Lab, CNLS, Los Alamos, NM 87545 USA
Univ Illinois, Dept Phys, Urbana, IL 61801 USA
ИФ СО РАН
Доп.точки доступа:
Berman, G. P.; Campbell, D. K.
}
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14.
Contrast, recording
time
and spatial resoiution in laser-adressed PDChLC display / A. V. Barannik, V. Ya. Zyryanov, V. F. Shabanov> //
4th Sino-Russian-Korean symposium on laser physics and laser technology : proceedings. - 1998. - P. 191-193
Материалы конференции
Доп.точки доступа:
Barannik, A. V.; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Shabanov, V. F.; Шабанов, Василий Филиппович; Sino-Russian-Korean symposium on laser physics and laser technology(4 ; 1998 ; 20-25 Dec. ; Harbin, China)
}
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15.
Barannik, A. V.
Spatial resolution and recording
time
in laser-adressed PDChLC display / A. V. Barannik, V. Ya. Zyryanov, V. F. Shabanov> //
7th International Symposium "Advanced Display Technologies" : proceedings. - 1998. - P. 112-114
Доп.точки доступа:
Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Shabanov, V. F.; Шабанов, Василий Филиппович; Баранник, Алексей Владимирович; "Advanced Display Technologies", International Symposium(7 ; 1998 ; 1-5 Dec. ; Minsk)
}
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16.
Gluck, M.
Bloch particle in the presence of dc and ac fields: Statistics of the Wigner delay
time
/ M. . Gluck, A. R. Kolovsky, H. J. Korsch> // Phys. Rev. Lett. - 1999. -
Vol. 82
,
Is. 7
. - P. 1534-1537,
DOI
10.1103/PhysRevLett.82.1534. - Cited References: 9 . - ISSN 0031-9007
РУБ
Physics, Multidisciplinary
Рубрики:
Аннотация:
The paper studies quantum states of a Bloch particle in the presence of external ac and de fields. Provided the period of the ac field and the Bloch period are commensurate, an effective scattering matrix is introduced, the complex poles of which are the system quasienergy spectrum. The statistics of the resonance width and the Wigner delay
time
shows a close relation of the problem to random matrix theory of chaotic scattering.[S0031 -9007(99)08408-2].
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Держатели документа:
Univ Kaiserslautern, Fachbereich Phys, D-67653 Kaiserslautern, Germany
LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Доп.точки доступа:
Kolovsky, A. R.; Коловский, Андрей Радиевич; Korsch, H. J.
}
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17.
Gluck, M.
A quantum cable car for Wannier-Stark ladders / M. . Gluck, A. R. Kolovsky, H. J. Korsch> // Phys. Lett. A. - 2000. -
Vol. 276
,
Is. 1-4
. - P. 167-174,
DOI
10.1016/S0375-9601(00)00656-3. - Cited References: 13 . - ISSN 0375-9601
РУБ
Physics, Multidisciplinary
Рубрики:
DYNAMIC LOCALIZATION
BLOCH PARTICLE
AC FIELDS
DC
STATES
STATISTICS
LIFETIME
Кл.слова (ненормированные):
Wannier-Stark ladder
--
induced transitions
--
Induced transitions
--
Wannier-Stark ladder
--
article
--
energy
--
oscillation
--
quantum mechanics
--
time
--
transport kinetics
Аннотация:
This Letter studies the dynamics of transitions between the levels of a Wannier-Stark ladder induced by a resonant periodic driving. The analysis of the problem is done in terms of resonance quasienergy states, which take into account the metastable character of the Wannier-Stark states. It is shown that the periodic driving creates from a localized Wannier-Stark state an extended Bloch-like state with a spatial length varying in
time
as similar to t(1/2). Such a state can find applications in the field of atomic optics because it generates a coherent pulsed atomic beam. (C) 2000 Elsevier Science B.V. All rights reserved.
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Держатели документа:
Univ Kaiserslautern, Fachbereich Phys, D-67653 Kaiserslautern, Germany
LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Fachbereich Physik, Universitat Kaiserslautern, D-67653 Kaiserslautern, Germany
L.V. Kirensky Institute of Physics, 660036 Krasnoyarsk, Russian Federation
Доп.точки доступа:
Kolovsky, A. R.; Коловский, Андрей Радиевич; Korsch, H. J.
}
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18.
Zobov, V. E.
Singular points of
time
-dependent correlation functions of spin systems on large-dimensional lattices at high temperatures / V. E. Zobov> // Theor. Math. Phys. - 2000. -
Vol. 123
,
Is. 1
. - P. 511-523,
DOI
10.1007/BF02551058. - Cited References: 21 . - ISSN 0040-5779
РУБ
Physics, Multidisciplinary + Physics, Mathematical
Рубрики:
BRANCHED POLYMERS
HEISENBERG MAGNET
EXPANSION
MODELS
Аннотация:
Time
-dependent autocorrelation functions are investigated for the Heisenberg model with spins 1/2 on d-dimensional simple cubic lattices of large dimensions d at infinite temperature. The autocorrelation function on the imaginary
time
axis is interpreted as the generating function of bond trees constructed with double bonds. These trees provide the leading terms with respect to lid for the
time
-expansion coefficients of the autocorrelation function. The correction terms from branch intersections to the generating function in the Bethe approximation are derived for these trees. A procedure is suggested for finding the correction to the coordinate of the singular point of the generating function (i.e., to the reciprocal of the branch growth-rate parameter) from the above correction terms without calculating the number of trees. The leading correction terms of order 1/sigma(2) (where sigma = 2d - 1) are found for the coordinates of the singular points of the autocorrelation function in question and for the generating function of the trees constructed with single bonds in the Eden model.
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Держатели документа:
RAS, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk, Russia
ИФ СО РАН
Доп.точки доступа:
Зобов, Владимир Евгеньевич
}
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19.
Fransson, J.
Effects of nonorthogonality in the
time
-dependent current through tunnel junctions / J. . Fransson, O. . Eriksson, I. . Sandalov> // Phys. Rev. B. - 2001. -
Vol. 64
,
Is. 15
. - Ст. 153403,
DOI
10.1103/PhysRevB.64.153403. - Cited References: 20 . - ISSN 0163-1829
РУБ
Physics, Condensed Matter
Рубрики:
LOCAL OXIDATION
TRANSPORT
DEVICES
Аннотация:
A theoretical technique which allows one to include contributions from nonorthogonality of the electron states in the leads connected to a tunneling junction is derived. The theory is applied to a single-barrier, tunneling structure and a simple expression for the
time
-dependent tunneling current is derived showing explicit dependence of the overlap. The overlap proves to be necessary for a better quantitative description of the tunneling current, and our theory reproduces experimental results substantially better compared to standard approaches.
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Держатели документа:
Univ Uppsala, Condensed Matter Theory Grp, S-75121 Uppsala, Sweden
Linkoping Univ, Dept Phys, S-58183 Linkoping, Sweden
RAS, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Доп.точки доступа:
Eriksson, O.; Sandalov, I. S.; Сандалов, Игорь Семёнович
}
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20.
Zobov, V. E.
A Monte Carlo study of the dependence of the growth parameter for trees on the lattice dimension in the Eden model / V. E. Zobov, M. A. Popov> // Theor. Math. Phys. - 2001. -
Vol. 126
,
Is. 2
. - P. 270-279,
DOI
10.1023/A:1005260114182. - Cited References: 17 . - ISSN 0040-5779
РУБ
Physics, Multidisciplinary + Physics, Mathematical
Рубрики:
DIFFUSION-LIMITED AGGREGATION
BRANCHED POLYMERS
HIGH-TEMPERATURES
EXPANSION
TIME
Аннотация:
We use the Monte Carlo method to compute the number of trees with n edges in the Eden model on d-dimensional simple cubic lattices for d = 2, 3, 4, 6, 8, 10. We compare these numbers with the exact data derived by the enumeration method up to n = 12 on the square lattice and up to n = 10 on the cubic lattice. We find that for d greater than or equal to 3, the computed values of the growth parameter for trees agree with the values that we derived earlier by the expansion in inverse powers of 2d - 1.
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Держатели документа:
RAS, Siberian Branch, Kirenskii Phys Inst, Krasnoyarsk, Russia
Krasnoyarsk State Univ, Krasnoyarsk, Russia
ИФ СО РАН
Kirenskii Physics Institute, Siberian Branch, RAS, Krasnoyarsk, Russian Federation
Krasnoyarsk State University, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Popov, M. A.; Зобов, Владимир Евгеньевич
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